Basic Dysrhythmia Course Exam with 100% corrrect answers 2024

SA node correct answersthe major pacemaker of the heart 60-100 correct answersinherent rate of the SA node 40-60 correct answersinherent rate of the AV node 20-40 correct answersinherent rate of the ventricles (purkinjie fibers) systole correct answersphase of contraction diastole correct answersphase of relaxation p wave correct answerswhat does atrial depolarization show on the ECG? QRS complex correct answerswhat does ventricle depolarization show on the ECG? T wave correct answerswhat does repolarization show on the ECG? increase correct answerswhat does sympathetic stimulation do to the heart rate? decrease correct answerswhat does parasympathetic stimulation do to the heart rate? absolute refractory period correct answersthe period immediately following the firing of a nerve fiber when it cannot be stimulated no matter how great a stimulus is applied relative refractory period correct answersduring the ventricular cardiac cycle when all cardiac cells are not fully repolarized and a strong enough stimulus can excite cardiac tissue and initiate arrhythmias last half of t wave correct answersWhen is the relative refractory period of the ventricles? .20 secs correct answershow much time is one large box in an ecg strip? .04 secs correct answershow much time is one small box in an ecg strip? 0.12-0.20 correct answersnormal range of PR interval 0.04-0.12 correct answersnormal range of QRS complex less than 1/2 the preceding R-R interval correct answerswhat is the normal time of the QT?